day9.rs

fn main() {
    let mut input = include_str!("../../day9.txt").chars();

    let mut gc = 0;
    let mut garbage = false;
    let mut groups = vec![];
    let mut open_groups = 0;
    while let Some(c) = input.next() {
        if !garbage {
            match c {
                '{' => open_groups += 1,
                '}' => {
                    groups.push(open_groups);
                    open_groups -= 1;
                },
                '<' => { garbage = true },
                '!' => { input.next(); },
                _ => {},
            }
        } else {
            match c {
                '>' => { garbage = false },
                '!' => { input.next(); },
                _ => { gc += 1 },
            }
        }
    }
    println!("{}", groups.iter().sum::<i32>());
    println!("{}", gc);
}